| 摘要 |
An in situ method of cleaning contaminated soil and/or water comprises breaking up contaminated soil, admixing soil with water and a biodegradable detergent in a proportion effective to obtain an aqueous slurry where the contaminant and the detergent interact, allowing the slurry to stand under conditions effective to permit any contaminant-detergent formations to rise in the aqueous slurry, separating the contaminant-detergent formations from the aqueous slurry, now comprising partially decontaminated soil and water, separating the soil from the water, repeating the cleaning and separation steps until the soil has less contaminant than a predetermined value, typically a 80 to 90 percent decrease, admixing the low contamination-soil with water and an activating agent for contaminant-degrading microorganism, the agent being capable of generating hydrogen peroxide (H2O2) in solution, allowing the activating agent to interact with soil microorganisms in the aqueous mixture under conditions effective to degrade any contaminants remaining therein, separating the activating agent-treated soil from the aqueous mixture comprising the microorganisms, washing the separated soil and returning it to the original environment site, filtering the previously separated water to separate any contaminants, and recycling the filtered water into the system or returning it to the environment. An apparatus for performing the process is also disclosed.
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